JP3119767B2 - connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector, and more particularly to a connector having a lock mechanism for preventing the connector from coming off.

With the recent increase in the speed of electronic equipment, the necessity of mounting a coaxial connector for high-speed transmission has increased, and a connector having excellent insertion / extraction operability and a good retaining effect has been provided.

[0005] However, the cable tension is increased due to the increase in the thickness of the cable due to the further increase in speed, and the external force applied to the connector tends to increase accordingly.

[0004] Therefore, a connector that can maintain high reliability even when an applied external force increases is desired.

[0005]

2. Description of the Related Art A conventional connector having a retaining mechanism is disclosed, for example, in Japanese Patent Application Laid-Open No. 1-276576. FIG. 5 shows the connector 1 shown in the publication, FIG. 5 (A) shows the connector 1 before insertion, FIG. 5 (B) shows the connector 1 immediately after insertion, and FIG. (C) shows the connector 1 in the locked state.

In the figure, reference numeral 2 denotes a mating connector such as a plug connector, which is composed of an insulator 4 holding a male contact 3 at the center and a plug shell 5 fitted on the outer periphery thereof. A locking groove 7 is provided on the outer periphery of all the insertion portions 6 of the plug shell 5.

On the other hand, the connector 1 has a substantially cylindrical insulator 8.
The connector body includes a cable holding body 9 made of a metal shell and a metal shell 10, and a cylindrical movable sleeve 11 provided on the outer periphery of the connector body so as to be movable in the front-rear direction.

The connector body has a female contact 12 at the center.
, A columnar cable holder 9 which is sequentially inserted and integrated with the rear of the insulator 8 together with the coaxial cable 14 to be connected, and which is screwed and fixed to the cable holder 9. And a substantially cylindrical metal shell 10.

The distal end side of the metal shell 10 is a portion into which the insertion portion 6 of the mating connector 2 is inserted, and is divided into a plurality of legs 16 which can be elastically deformed in the center direction by forming a slit. I have. The movable sleeve 11 is formed with a fastening portion 17 whose inner diameter is smaller than the outer diameter of the distal end portion of the metal shell 10 from the tip (right end) of the inner periphery toward the rear (left direction).

Then, the cable holder 9 is screwed into the metal shell 10 to be integrated therewith. After the movable sleeve 11 is inserted from the front of the metal shell 10, the movable sleeve 11
The connector 1 is formed by mounting an Ω-shaped ring spring 19 from the spring storage groove 18 formed in the connector 1.

In the connector 1 having the above structure, FIG.
In the state before insertion shown in FIG.
Is located at a rearward position with respect to the metal shell 10, so that the plurality of legs 16 are not displaced inward (that is, open). Therefore, when the mating connector 2 is inserted into the connector 1 as shown in FIG. 1B, the force required for insertion is small, and the insertion operation can be easily performed.

When the mating connector 2 is inserted to a predetermined position of the connector 1, the movable sleeve 11 is slid forward as shown in FIG. As described above, the fastening portion 17 whose inner diameter is smaller than the outer diameter of the front end portion of the metal shell 10 is formed in the movable sleeve 11 from the front end (right end) of the inner periphery toward the rear (left direction). Therefore, when the movable sleeve 11 is slid forward, the plurality of legs 16 are displaced inward, and the metal shell 1 is displaced.
0, and the mating connector 2 is prevented (locked) from coming out of the connector 1 by this engaging force.

When the mating connector 2 is pulled out from the connector 1, the movable sleeve 11 is again slid backward to disengage the plurality of legs 16 from the metal shell 10, and then the mating connector 2 is pulled out. . This allows
The force required for pulling out the mating connector 2 is small, and the pulling-out operation can be easily performed.

[0014]

In the connector 1 having the above-described conventional configuration, the operability can be improved because the insertion / removal operation can be performed with a small force at the time of insertion / removal of the mating connector 2, and operability can be improved. At the time of mounting, the connector 1 and the mating connector 2 can be reliably locked by the engagement force.

[0015] However, as shown in FIG.
The conventional connector 1 is configured to be directly fastened to the mating connector 2. Therefore, as described above, when the coaxial cable 14 is thickened due to the high speed and the cable tension is increased, the external force due to the cable tension is directly applied to the fastening portion between the connector 1 and the mating connector 2 and to the mating connector 2.

For this reason, there is a problem that rattling or the like may occur at the fastening portion between the direct connector 1 and the mating connector 2 due to the above-mentioned external force, and good electrical connection may not be achieved. Further, since the mating connector 2 is generally soldered to a circuit board or the like, the above-described external force is directly applied to the mating connector.
2 , the soldered portion may be defective.

As described above, the conventional connector has a problem that the reliability of the connector may be deteriorated due to the thickening of the coaxial cable 14.

The present invention has been made in view of the above points, and an object of the present invention is to provide a connector which can maintain high reliability regardless of a thick cable.

[0019]

In order to solve the above-mentioned problems, in the connector according to the present invention, an inner cylindrical portion to which an external cable is attached, and the inner cylindrical portion in accordance with elastic deformation of an elastic member provided therein. And an insertion plug provided with an outer cylinder portion forming a first lock portion, and an inner cable portion electrically connected to the external cable by inserting the inner cylinder portion. a socket connected to, the outer and the cylindrical portion and the engaging portion for engaging said first locking portion and by fitting formed by providing a second locking portion for fixing the insertion plug fixing block The fixed block
The socket on the fixed plate attached to the base.
It is characterized in that it is arranged in an independent configuration for the unit.

[0020]

With the above configuration of the connector, the electrical connection between the insertion plug and the socket is performed by inserting the inner cylinder into the socket. Further, the mechanical connection between the insertion plug and the socket is performed by fitting the first lock portion and the second lock portion and fixing the outer cylinder portion to the fixed block.

Therefore, even if the cable tension increases due to the thickening of the external cable, the external force due to the cable tension is received by the fixed block, and is not directly applied to the socket.

Therefore, good electrical connection can be maintained without applying external force to the connection position between the inner cylinder portion and the socket where the electrical connection is made, and the socket is soldered to a circuit board or the like . In this case , the peeling of the solder can be prevented, and the reliability of the connector can be improved.

[0023]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a connector 30 according to an embodiment of the present invention. The connector 30 according to the present invention is a round connector for connecting a coaxial cable 31, and is roughly described as an insertion plug 32, a socket 33, and a fixed block 34.
And the like.

The insertion plug 32 has a structure in which an inner cylinder 36, a coil spring 37, a metal shell 38 and the like are disposed inside an outer cylinder 35. Each of the outer cylinder 35 and the inner cylinder 36 has a cylindrical shape, and is formed of a hard resin or metal. Since the outer diameter of the inner cylinder 36 is smaller than the inner diameter of the outer cylinder 35, the inner cylinder 36 is inserted inside the outer cylinder 35 in the direction of insertion and removal of the insertion plug 32 (arrow A 1 in the figure). , A2).

A flange 39 protruding inward is formed inside the outer cylinder 35, and flanges 40 and 41 protruding outward are formed on the outer periphery of the inner cylinder 36. . The flange portion 40 formed on the inner cylinder portion 36 is configured to engage with the flange portion 39 formed on the outer cylinder portion 35 by moving the inner cylinder portion 36 in the A1 direction. 3
The coil spring 37 is interposed between the flange 39 formed on the inner tube 5 and the flange 39 formed on the inner cylinder 36.

The coil spring 37 urges the elastic force so as to expand the space between the flange 39 and the flange 41, and the flange 40 formed on the inner cylinder 36 is attached to the outer cylinder 35. By engaging with the formed flange 39, the outer cylinder 35
On the other hand, the inner cylinder 36 is locked in the state shown in FIG. Therefore, the inner cylinder portion 36 is configured to be movable in the A2 direction from the state shown in FIG. 1 against the elastic force of the coil spring 37 when a force is applied in the A2 direction.

The metal shell 38 has a coaxial cable 3 inside.
1 is fixedly inserted into the inner cylindrical portion 36. Therefore, the metal shell 38 behaves integrally with the inner cylinder 36. A connecting portion 42 is formed at the distal end of the metal shell 38 in the insertion direction, and the connecting portion 42 is fitted to the socket 33.

On the other hand, at the tip of the outer cylinder 35 in the insertion direction,
A pair of first lock portions 43 are formed so as to face each other. The first lock portion 43 is a substantially L-shaped concave portion, and is configured to fit a second lock portion 44 formed on the fixed block 34 described later. The first lock portion 43 first extends in the A2 direction from the distal end edge of the outer cylinder portion 35 in the insertion direction, and then extends in the horizontal direction.
A portion slightly recessed in one direction (hereinafter, referred to as a fitting position and denoted by reference numeral 45) is formed.

Subsequently, the socket 33 and the fixed block 3
4 will be described with reference to FIG. 3 in addition to FIG. still,
FIG. 3 shows a state where only the socket 33 is provided (indicated by an arrow X1) and a state where only the fixing block 34 is provided (an arrow X2).
FIG. 7 is a diagram showing each arrangement state in which the socket 33 and the fixed block 34 are arranged together (indicated by arrows X3 and X4).

The socket 33 is provided on a circuit board 46, and includes a base portion 47, a metal shell 48, an insulating portion 49,
It is composed of connector pins 50, terminal pins 51 and 52, and the like. The base portion 47 is a portion mounted on the circuit board 46 and integrally holds a metal shell 48. Inside the metal shell 48, a connector pin 50 is provided upright via an insulating portion 49. This connector pin 50
When the above-mentioned insertion plug 32 is mounted, it is electrically connected to the coaxial cable 31.

The terminal pins 51 and 52 are provided so as to extend downward (in the direction A1) from the bottom side of the base portion 47. The terminal pins 51 and 52 are inserted into holes 53 formed in the circuit board 46 and protrude from the rear side of the circuit board 46. The protruding portions are joined with solder 54 (shown in a matte finish) to form the socket 33. It is fixed to the circuit board 46.
The terminal pins 51 are electrically connected to the metal shell 48, and the terminal pins 52 are electrically connected to the connector pins 50.

The fixed block 34 is a cylindrical member.
As shown in FIG. 3, it is arranged on a fixing plate 57 fixed to the circuit board 46. This fixed block 34
Is an engaging portion 55 that engages with the outer cylindrical portion 35 of the insertion plug 32.
, An insertion portion 56 inserted into a hole 58 formed in the fixing plate 57, a second lock portion 44 protruding outward from an outer peripheral portion of the engagement portion 55, and the like.

The fixing plate 57 is fixed to bosses 60 and 61 erected on the circuit board 46 in a state of facing and separated from the screws 62 and 63. Further, a hole 58 formed in the fixing plate 57 is formed corresponding to a position where the socket 33 is provided. The insertion portion 56 of the fixing block 34 is inserted into the hole 58, and the fixing plate of the insertion portion 56 is formed. The fixing block 34 is fixed to the fixing plate 57 by fastening the C washer 64 to a portion protruding from the back surface of the fixing 57.

Since the fixing plate 57 is fixed at a position separated from the circuit board 46 as described above, the fixing block 34 is fixed to the socket 33 in an upper state with the fixing block 34 fixed to the fixing plate 57. Is fixed in a state of facing away from. That is, the fixed block 34
Are independent of the socket 33. In this embodiment, although the metal shell 48 of the socket 33 is located inside the fixed block 34, the socket 3
3 and the fixed block 34 are arranged in a state of being separated from each other.

An outer peripheral portion of the fixed block 34 is an engaging portion 55 which engages with the outer cylindrical portion 35 of the insertion plug 32. The engaging portion 55 is provided with a second lock portion 44. I have. The second lock portion 44 is a pin protruding outward from the engagement portion 55, and is provided on the first lock portion 43 so as to correspond to the disposition position.

Next, the operation of the connector 30 having the above configuration will be described.

In order to attach the insertion plug 32 to the socket 33, first, as shown in FIGS.
And the first locking portion 43 formed on the insertion plug 32.
And the second lock portion 4 formed on the fixed block 34
After positioning the plug 4, the insertion operation of the insertion plug 32 is performed in the A1 direction.

As a result of this insertion operation, the pin-shaped second lock portion 44 relatively enters the first lock portion 43, and the second lock portion 44 further moves the A 1, A of the first lock portion 43.
When the upper end of the portion extending in the two directions comes into contact with the upper end (indicated by reference numeral 65 in FIG. 1), the outer cylinder 35 is slightly rotated. Thus, the second lock portion 44 is located at the fitting position 45 of the first lock portion 43.

By the above-described insertion operation, the outer cylindrical portion 35 is inserted into and engaged with the engaging portion 55, and the inner cylindrical portion 44 is
3 is inserted into the metal shell 48. When the inner cylinder 36 is inserted into the metal shell 48, the inner cylinder 36
3 is configured to be relatively urged upward.
Therefore, the inner cylinder 36 moves upward with respect to the outer cylinder 35 against the elastic force of the coil spring 37.

As described above, the inner cylinder 36 moves upward with respect to the outer cylinder 35 (moves relatively to the outer cylinder 35 in the direction A2).
As a result, the elastic force of the coil spring 37 is applied to the outer cylindrical portion 35, and the inner cylindrical portion 36 is fixed to the socket 33. Therefore, the elastic force urges the outer cylindrical portion 35 to move upward in the A2 direction. Acts as a force. Therefore, the first force
The locking force between the lock portion 43 and the second lock portion 44 becomes stronger, and the connection between the insertion plug 32 and the fixed block 34 can be made stronger.

Further, disposed in the connecting portion 42 is the socket 33 of the metal shell 38 socket 33 to the inner cylinder portion 36 as described above which are disposed by being inserted, the inner cylinder portion 36
Is connected to the metal shell 48 is. Thereby, the coaxial cable 31 and the socket 33 are electrically connected.

FIG. 2 shows a state in which the insertion operation is performed as described above, and the insertion plug 32 is connected to the socket 33 and the fixed block 34.

As shown in the figure, in a state where the insertion plug 32 is connected to the socket 33 and the fixed block 34, the outer cylindrical portion 35 constituting the insertion plug 32 is connected and fixed to the fixed block 34, The inner cylinder 36 provided with the shell 48 is connected to the socket 33. With this configuration, mechanical fixing of the insertion plug 32 can be performed.
The fixing is performed when the first lock portion 43 and the second lock portion 44 are fitted and the outer cylinder portion 35 is fixed to the fixed block 34, and the electrical connection between the coaxial cable 31 and the socket 33 is made inward. This is performed by connecting the cylindrical portion 36 to the socket 33.

Therefore, even if the cable tension is increased due to the thickening of the coaxial cable 31, the external force due to the cable tension is received by the fixing block 34 via the outer cylinder 35 and the circuit board is connected via the fixing plate 56. It is configured to escape to 46. That is, in the configuration of the connector 30, the external force due to the cable tension is not directly applied to the socket 33, so that no external force is applied to the connection position between the inner cylinder portion 36 and the socket 33 where the electrical connection is made, and the connector 30 is good. Electrical connection can be maintained. In addition, since no external force is applied to the socket 33, no external force is applied to the soldering position between the terminal pins 51 and 52 and the circuit board 46, so that peeling of the solder 54 can be prevented, and the reliability of the connector 30 can be reduced. Performance can be improved.

In the above embodiment, the fixing plate 56 is fixed to the circuit board 46. However, the fixing position of the fixing plate 56 is not limited to the circuit board 46. It may be configured to be fixed to a housing or the like of an electronic device to be installed.

[0046]

As described above, according to the present invention, even if the cable tension increases due to the thickening of the external cable, the external force due to this cable tension is received by the fixed block and is not directly applied to the socket. Therefore, the electrical connection is an external force to the connecting position of the inner cylindrical portion and the socket can maintain the applied that are not good electrical connection made, the socket is soldered to the circuit board or the like
In such a case, it is possible to prevent the peeling of the solder and to improve the reliability of the connector.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a connector according to an embodiment of the present invention.

FIG. 2 is a diagram showing a state in which an insertion plug is mounted on a socket in the connector according to one embodiment of the present invention.

FIG. 3 shows a fixed block 3 in which only sockets are provided.
FIG. 4 is a view showing each arrangement state in a state in which a socket 4 and a socket and a fixed block are arranged together.

FIG. 4 is a perspective view of a main part of a connector according to an embodiment of the present invention.

FIG. 5 is a diagram illustrating an example of a conventional connector.

[Explanation of symbols]

 Reference Signs List 30 connector 31 coaxial cable 32 insertion plug 33 socket 34 fixing block 35 outer cylinder part 36 inner cylinder part 37 coil spring 38, 48 metal shell 43 first lock part 44 second lock part 46 circuit board 47 base part 50 connector pin 51 , 52 terminal pin 54 solder 55 engaging part 57 fixing plate

Continuation of the front page (56) References JP-A-59-27481 (JP, A) JP-A-3-50775 (JP, U) JP-A-60-3671 (JP, U) JP-A-57-95786 (JP) , U) Fully open sho 59-39877 (JP, U) Fully open sho 64-55578 (JP, U) Fully open sho 56-175977 (JP, U) Fully open sho 54-31189 (JP, U) Really open 57-6179 (JP, U) Shokai 62-163881 (JP, U) Shokai 59-53780 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 13/62 -13/639 H01R 13/73-13/74 H01R 24/02 H01R 9/05

Claims (3)

(57) [Claims] 1. A first locking portion with an external cable to support an inner cylinder portion, the inner cylinder portion with the elastic deformation of the elastic member which is internally provided with displaceable configuration insertion direction to be attached and inserting plug formed by providing an outer tube portion made form shape <br/> and a socket connected external cables and electrically by inner cylinder section is inserted, the outer the second locking portion for fixing the engaging portion to be engaged with the cylindrical portion, the insertion plug by locking portions and the fitting of the first
It is provided with fixed blocks formed by providing the door, fixing plate of the fixed block, attached to the base
2. The connector according to claim 1, wherein said connector is provided independently of said socket . 2. The device according to claim 1, wherein said first lock portion is a substantially L-shaped concave portion, and said second lock portion is a convex portion provided to protrude outside said engaging portion. Item 7. The connector according to Item 1. 3. A resilient member, in a state where the lock portion of the lock portion of the first and the second is fitted, the elastic force of the locking portion and the second locking portion of the first The connector according to claim 1, wherein the connector is configured to be urged in a direction to increase the fitting force.